Short Answer 1. A study on rat metabolism is being conducted. There are 3 different groups of rats involved. Group 1 Diet rich in fat but normal in carbohydrates and

protein Group 2 Diet rich in protein but normal in carbohydrates and fat Group 3 Diet rich in carbohydrates and normal protein and fat a. The three groups are kept in identical environments with opportunities for physical activity. Write a hypothesis, predicting the expected energy levels for each group for the first 4 days of the experiment. Please explain your predictions. (A-4, 2-C) 3 Scanned with CamScanner b. You run the experiment for 20 days and then analyze the results. How do you expect the three groups to compare in terms of body size/mass and general health? (A-4, 2-C) de toutes 2. Track athletes often say that the 400m sprint is much more exhausting and harder on the legs than the 100m sprint. What type of respiration would a 400m sprinter rely mostly on as they reach the end of the race? Explain. (A-4, 2-C) 3. Several anti-nuclear war protesters claim that inhabitants of the earth did not perish from nuclear bombs or the radiation afterwards, that the people would slowly succumb to changes brought on during the "nuclear winter". During a "nuclear winter", a lot of dust would be drifting in the atmosphere causing the blockages of the sun's electromagnetic spectrum. Based on your knowledge of photosynthesis, what impact would this have on humans that are still alive and why? (A-4, 2-C) Scanned with CamScanner